Cutter guard



P 6, .1 B. F. GRAVELY 1,876,220

CUTTER GUARD Original Filed May 50, 1930 Patented Sept. 6 1932 omrssTA'rss PI ENT. F C L7.

BENJAMIN F. GRAVELY,'0F DUNBAR, WEST VIRGINIA CUTTER GUARD Applicationfiled May 30,1930, Serial finger is adapted to. be removed to permitsharpening the cutting edges of the finger.

Other objects and advantages will be apparent from the followingdescription when taken in connection with the accompanying drawing.

In the drawing:

Figure 1 is a plan view of a guard finger made in accordance with thepresent invention.

Figure 2 is a side elevation of the same.

Figure 3 is a vertical longitudinal sectional view on the line 33 ofFigure 1.

Figure 4 is a vertical transverse sectional view on the line 4:4: ofFigure 1. Y

Figure 5 is an inverted perspective viewof one of the lips removed fromthe guard finger.

Referring particularly to the accompanying drawing, there is shown acutter guard unit, which consists of two guard fingers 10, connected attheir rear ends by the body portion 11. In the extreme rear of theportion 11 there are formed openings 12 for receiving fastening devices,not shown, by means of which said unit is adapted to be secured to amowing machine arm, in connection with a number of other similar units.Formed transversely in the upper face of the body portion 11,immediately rearward of the bases of the fingers 10, is a groove 13which is adapted to receive the cutter bar, not shown. Formedlongitudinally in the upper face of each of the fingers 10, andextending through the outer end thereof, is a groove 14, and in thebottom of said groove, adjacent the outer end thereof, there is formedthe vertical opening 15. The upper face of each finger is flat, asclearly seen in the transverse sectional view, and where the long sidesof said upper face join the sides of the transversely curved bottom ofsaid finger, are produced the cutting edges 16, which are adapted tocooperate no. 457,550. Renewed June 21, 1932.

with the knives of a cutter bar, for cutting grass, grain, and the like.It is to be understood that the guard fingers and thelips are steelforgings, whereby to permit grinding the cutting edges 16, and wherebysuch edges will properly maintain their sharpness, thus obviating theuse, in this guard finger, of the ordinary leger plates.

A lip, represented as a whole by the numeral 17 is secured to each guardfinger, as clearly shown in the drawing, such lip including the bodyportion 18, having its outer end formed in tapering conformation withthe forward end of the guard finger, as clearly shown in the side andplan views, said lip having on the lower face of its outer end portion,the longitudinal rib 19, which is fitted in the outer end portion ofsaid groove 14, there being a vertical opening 20 through this portionof the lip for registry with the opening 15, for receiving the securingrivet or bolt 21. From the rear end ofthe body 18, of the lip, thereextends a longitudinally and upwardly arched arm 22, the rear extremityof which is disposed in spaced relation above the upper face of theguard finger, to a sufficient degree to permit cutting knives toproperly slide therebetween, transversely of the guard finger, and heldthereby for properly cooperating with the cutting edges of said finger.

It will be noted that the forward end of the lip is formed with ashoulder 28, on each side of the front end of the rib, which shoulderfits against the front end of the finger, so that the sides of the noseof the said lip conform with the adjacent sides of the guard finger.These shoulders serve to limit the inward sliding movement of the lip,when same is being applied to the guard, whereby the inner end of thearm 22 will lie in its proper position over the upper face of the guard,and the openings of the lip and guard properly register for thereception of the rivet or bolt 21.

By removing the rivet or bolt 21, the lip may be taken off, so that thecutting edges 16, of the guard, may be easily sharpened, as will bereadily understood.

What is claimed is:

A cutter guard unit for mowing machines and the like comprising a bodyhaving a guard finger projecting therefrom, said finger having itslongitudinal marginal edges formed for cutting action with a cuttingknife reciprocated thereaeross, the upper face 01": said finger having alongitudinal central groove, and a removable lip disposed on said upperface having on the outer end portion of its lower face a longitudinalrib arranged to be received in the corresponding portion of the saidgroove, said lip having a rearwardly extending upwardly arched arm therear eartremity of which bears on the upper face of said cutting knife.

In testimony whereof, I my signature,

BENJAMIN F. GRAVELY.

